GM, give me a Hearing Perception test at -20 for Duboit.
Success:
SpoilerThe two girls speak the same language with equal fluency, but the 'foreign' looking one, the taller one, has an unusual accent. She also has an odd inflection when saying 'Si' as if she were about to say 'Si-si' but has long since consciously learned to stop herself, or repeat some adjectives or verbs twice, like 'walk-walk' or 'quick-quick'.